package com.yoshino.leetcode.oneHundred.nineth;

class Solution {
    public int maxSubArray(int[] nums) {
        int sum = 0;
        int max = Integer.MIN_VALUE;
        for (int num : nums) {
            if (sum <= 0) {
                sum = num;
            } else {
                sum += num;
            }
            max = Math.max(max, sum);
        }
        return max;
    }

    public int maxValue(int[][] grid) {
        if (grid.length == 0 || grid[0].length == 0) {
            return 0;
        }
        int m = grid.length, n = grid[0].length;
        int[][] dp = new int[m][n];
        dp[0][0] = grid[0][0];
        for (int i = 1; i < m; i++) {
            dp[i][0] = dp[i - 1][0] + grid[i][0];
        }
        for (int i = 1; i < n; i++) {
            dp[0][i] = dp[0][i - 1] + grid[0][i];
        }
        for (int i = 1; i < m; i++) {
            for (int j = 1; j < n; j++) {
                dp[i][j] = Math.max(dp[i - 1][j], dp[i][j - 1]) + grid[i][j];
            }
        }
        return dp[m - 1][n - 1];
    }
}